Magento订单取消还原优惠券的使用次数_magento教程_php教程

方法不难：利用magento的观察者事件，监听“sales_order_payment_cancel”，还原优惠券的使用次数即可。

一、创建一个module

二、config.xml文件如下：

<Magetechno_CancelCouponcode>

</Magetechno_CancelCouponcode>

</modules>

<class>Magetechno_CancelCouponcode_Model</class>

</cancelcouponcode>

</models>

<sales_order_payment_cancel>

<cancelcouponcode_observer>

<type>singleton</type>

<class>Magetechno_CancelCouponcode_Model_Observer</class>

<method>cancel</method>

</cancelcouponcode_observer>

</observers>

</sales_order_payment_cancel>

</events>

</global>

</config>

cancel_coupon_config.xml

三、添加Observer.php文件：

<?php

class Magetechno_CancelCouponcode_Model_Observer

{

public function cancel($observer)

{

$event = $observer->getEvent();

$order = $event->getPayment()->getOrder();

if ($order->canCancel()) {

if ($code = $order->getCouponCode()) {

$coupon = mage::getModel('salesrule/coupon')->load($code,'code');

if ($coupon->getTimesUsed() > 0) {

$coupon->setTimesUsed($coupon->getTimesUsed()-1);

$coupon->save();

}

$rule = Mage::getModel('salesrule/rule')->load($coupon->getRuleId());

if ($rule->getTimesUsed() > 0) {

$rule->setTimesUsed($rule->getTimesUsed()-1);

$rule->save();

}

if($customerId = $order->getCustomerId()) {

if ($customerCoupon = Mage::getModel('salesrule/rule_customer')->loadByCustomerRule($customerId, $rule->getId())) {

$couponUsage = new Varien_Object();

Mage::getResourceModel('salesrule/coupon_usage')->loadByCustomerCoupon($couponUsage, $customerId, $coupon->getId());

if ($couponUsage->getTimesUsed() > 0) {

/* I can't find any #@$!@$ interface to do anything but increment a coupon_usage record */

$resource = Mage::getSingleton('core/resource');

$writeConnection = $resource->getConnection('core_write');

$tableName = $resource->getTableName('salesrule_coupon_usage');

Mage::log($couponUsage->getTimesUsed(),null,"coupon_reused.log",true);

Mage::log("Coupon used time above",null,"coupon_reused.log",true);

if($couponUsage->getTimesUsed()==1)

{

$__condition1 = array($writeConnection->quoteInto('coupon_id=?',$coupon->getId()));

$__condition1 = array($writeConnection->quoteInto('customer_id=?',$customerId));

if($writeConnection->delete('salesrule_coupon_usage', $__condition1))

Mage::log("Its deleted from salesrule_coupon_usage",null,"coupon_reused.log",true);

$__condition2 = array($writeConnection->quoteInto('rule_id=?',$rule->getId()));

$__condition2 = array($writeConnection->quoteInto('customer_id=?',$customerId));

if($writeConnection->delete('salesrule_customer', $__condition2))

Mage::log("Its deleted from salesrule_custome",null,"coupon_reused.log",true);

}

else

{

$query = "UPDATE {$tableName} SET times_used = times_used-1 " .

" WHERE coupon_id = {$coupon->getId()} AND customer_id = {$customerId} AND times_used > 0";

$writeConnection->query($query);

Mage::log("We have updated it",null,"coupon_reused.log",true);

}

if ($customerCoupon->getTimesUsed() > 0) {

$customerCoupon->setTimesUsed($customerCoupon->getTimesUsed()-1);

$customerCoupon->save();

//Mage::log('setTimesUsed customer saved Rule Time used');

}

(责任编辑：好模板)